(19)

(11)

EP 0 615 630 A1

(12)

(43) Date of publication: 21.09.1994 Bulletin 1994/38 (21) Application number: 93920772.0 (22) Date of filing: 20.09.1993

(51) International Patent Classification (IPC):  C09K 19/ 02( . ) C09K 19/ 14( . ) C09K 19/ 30( . ) C09K 19/ 34( . ) C09K 19/ 42( . ) C09K 19/ 54( . ) G02F 1/ 1333( . ) C09K 19/ 12( . ) C09K 19/ 20( . ) C09K 19/ 32( . ) C09K 19/ 38( . ) C09K 19/ 52( . ) G02F 1/ 13( . ) (86) International application number: PCT/EP1993/002539 (87) International publication number: WO 1994/008268 (14.04.1994 Gazette 1994/09)

(84) Designated Contracting States: GB NL (30) Priority: 02.10.1992 GB 19920020750 (71) Applicant: MERCK PATENT GmbH D-64293 Darmstadt (DE)	(72) Inventors: PARRI, Owain, Llyr Poole, Dorset BH15 2LN (GB) BROWN, Emma Jane Broadway, Weymouth, Dorset DT3 5RS (GB) COATES, David Merley, Wimborne, Dorset BH21 1SW (GB) GOULDING, Mark John Lower Parkstone, Poole BH14 8TP (GB)